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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.regionserver.querymatcher;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.NavigableSet;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.hadoop.hbase.Cell;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.CellUtil;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.KeyValueUtil;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.PrivateCellUtil;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.client.Scan;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.filter.Filter;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.filter.Filter.ReturnCode;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.io.TimeRange;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.regionserver.ScanInfo;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span><a name="line.34"></a> |
| <span class="sourceLineNo">035</span>/**<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * Query matcher for user scan.<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * <p><a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * We do not consider mvcc here because<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * {@link org.apache.hadoop.hbase.regionserver.StoreFileScanner} and<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * {@link org.apache.hadoop.hbase.regionserver.SegmentScanner} will only return a cell whose mvcc is<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * less than or equal to given read point. For<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * {@link org.apache.hadoop.hbase.client.IsolationLevel#READ_UNCOMMITTED}, we just set the read<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * point to {@link Long#MAX_VALUE}, i.e. still do not need to consider it.<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> */<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>@InterfaceAudience.Private<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>public abstract class UserScanQueryMatcher extends ScanQueryMatcher {<a name="line.46"></a> |
| <span class="sourceLineNo">047</span><a name="line.47"></a> |
| <span class="sourceLineNo">048</span> protected final boolean hasNullColumn;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span><a name="line.49"></a> |
| <span class="sourceLineNo">050</span> protected final Filter filter;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> protected final byte[] stopRow;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span><a name="line.53"></a> |
| <span class="sourceLineNo">054</span> protected final TimeRange tr;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> private final int versionsAfterFilter;<a name="line.56"></a> |
| <span class="sourceLineNo">057</span><a name="line.57"></a> |
| <span class="sourceLineNo">058</span> private int count = 0;<a name="line.58"></a> |
| <span class="sourceLineNo">059</span><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> private Cell curColCell = null;<a name="line.60"></a> |
| <span class="sourceLineNo">061</span><a name="line.61"></a> |
| <span class="sourceLineNo">062</span> private static Cell createStartKey(Scan scan, ScanInfo scanInfo) {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> if (scan.includeStartRow()) {<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> return createStartKeyFromRow(scan.getStartRow(), scanInfo);<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> } else {<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> return PrivateCellUtil.createLastOnRow(scan.getStartRow());<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> }<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> }<a name="line.68"></a> |
| <span class="sourceLineNo">069</span><a name="line.69"></a> |
| <span class="sourceLineNo">070</span> protected UserScanQueryMatcher(Scan scan, ScanInfo scanInfo, ColumnTracker columns,<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> boolean hasNullColumn, long oldestUnexpiredTS, long now) {<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> super(createStartKey(scan, scanInfo), scanInfo, columns, oldestUnexpiredTS, now);<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> this.hasNullColumn = hasNullColumn;<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> this.filter = scan.getFilter();<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> if (this.filter != null) {<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> this.versionsAfterFilter = scan.isRaw()<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> ? scan.getMaxVersions()<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> : Math.min(scan.getMaxVersions(), scanInfo.getMaxVersions());<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> } else {<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> this.versionsAfterFilter = 0;<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> }<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> this.stopRow = scan.getStopRow();<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> TimeRange timeRange = scan.getColumnFamilyTimeRange().get(scanInfo.getFamily());<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> if (timeRange == null) {<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> this.tr = scan.getTimeRange();<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> } else {<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> this.tr = timeRange;<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> }<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> }<a name="line.89"></a> |
| <span class="sourceLineNo">090</span><a name="line.90"></a> |
| <span class="sourceLineNo">091</span> @Override<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> public boolean hasNullColumnInQuery() {<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> return hasNullColumn;<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> }<a name="line.94"></a> |
| <span class="sourceLineNo">095</span><a name="line.95"></a> |
| <span class="sourceLineNo">096</span> @Override<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> public boolean isUserScan() {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> return true;<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> }<a name="line.99"></a> |
| <span class="sourceLineNo">100</span><a name="line.100"></a> |
| <span class="sourceLineNo">101</span> @Override<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> public Filter getFilter() {<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> return filter;<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> }<a name="line.104"></a> |
| <span class="sourceLineNo">105</span><a name="line.105"></a> |
| <span class="sourceLineNo">106</span> @Override<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> public Cell getNextKeyHint(Cell cell) throws IOException {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> if (filter == null) {<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> return null;<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> } else {<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> return filter.getNextCellHint(cell);<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> }<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> }<a name="line.113"></a> |
| <span class="sourceLineNo">114</span><a name="line.114"></a> |
| <span class="sourceLineNo">115</span> @Override<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> public void beforeShipped() throws IOException {<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> super.beforeShipped();<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> if (curColCell != null) {<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> this.curColCell = KeyValueUtil.toNewKeyCell(this.curColCell);<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> }<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> }<a name="line.121"></a> |
| <span class="sourceLineNo">122</span><a name="line.122"></a> |
| <span class="sourceLineNo">123</span> protected final MatchCode matchColumn(Cell cell, long timestamp, byte typeByte)<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> throws IOException {<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> int tsCmp = tr.compare(timestamp);<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> if (tsCmp > 0) {<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> return MatchCode.SKIP;<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> }<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> if (tsCmp < 0) {<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> return columns.getNextRowOrNextColumn(cell);<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> }<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> // STEP 1: Check if the column is part of the requested columns<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> MatchCode matchCode = columns.checkColumn(cell, typeByte);<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> if (matchCode != MatchCode.INCLUDE) {<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> return matchCode;<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> }<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> /*<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> * STEP 2: check the number of versions needed. This method call returns SKIP, SEEK_NEXT_COL,<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> * INCLUDE, INCLUDE_AND_SEEK_NEXT_COL, or INCLUDE_AND_SEEK_NEXT_ROW.<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> */<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> matchCode = columns.checkVersions(cell, timestamp, typeByte, false);<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> switch (matchCode) {<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> case SKIP:<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> return MatchCode.SKIP;<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> case SEEK_NEXT_COL:<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> return MatchCode.SEEK_NEXT_COL;<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> default:<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> // It means it is INCLUDE, INCLUDE_AND_SEEK_NEXT_COL or INCLUDE_AND_SEEK_NEXT_ROW.<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> assert matchCode == MatchCode.INCLUDE || matchCode == MatchCode.INCLUDE_AND_SEEK_NEXT_COL<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> || matchCode == MatchCode.INCLUDE_AND_SEEK_NEXT_ROW;<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> break;<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> }<a name="line.152"></a> |
| <span class="sourceLineNo">153</span><a name="line.153"></a> |
| <span class="sourceLineNo">154</span> return filter == null<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> ? matchCode<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> : mergeFilterResponse(cell, matchCode, filter.filterCell(cell));<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> }<a name="line.157"></a> |
| <span class="sourceLineNo">158</span><a name="line.158"></a> |
| <span class="sourceLineNo">159</span> /**<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> * Call this when scan has filter. Decide the desired behavior by checkVersions's MatchCode and<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> * filterCell's ReturnCode. Cell may be skipped by filter, so the column versions in result may be<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> * less than user need. It need to check versions again when filter and columnTracker both include<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> * the cell. <br/><a name="line.163"></a> |
| <span class="sourceLineNo">164</span> *<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> * <pre><a name="line.165"></a> |
| <span class="sourceLineNo">166</span> * ColumnChecker FilterResponse Desired behavior<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> * INCLUDE SKIP SKIP<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> * INCLUDE NEXT_COL SEEK_NEXT_COL or SEEK_NEXT_ROW<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> * INCLUDE NEXT_ROW SEEK_NEXT_ROW<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> * INCLUDE SEEK_NEXT_USING_HINT SEEK_NEXT_USING_HINT<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> * INCLUDE INCLUDE INCLUDE<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> * INCLUDE INCLUDE_AND_NEXT_COL INCLUDE_AND_SEEK_NEXT_COL<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> * INCLUDE INCLUDE_AND_SEEK_NEXT_ROW INCLUDE_AND_SEEK_NEXT_ROW<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> * INCLUDE_AND_SEEK_NEXT_COL SKIP SEEK_NEXT_COL<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> * INCLUDE_AND_SEEK_NEXT_COL NEXT_COL SEEK_NEXT_COL or SEEK_NEXT_ROW<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> * INCLUDE_AND_SEEK_NEXT_COL NEXT_ROW SEEK_NEXT_ROW<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> * INCLUDE_AND_SEEK_NEXT_COL SEEK_NEXT_USING_HINT SEEK_NEXT_USING_HINT<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> * INCLUDE_AND_SEEK_NEXT_COL INCLUDE INCLUDE_AND_SEEK_NEXT_COL<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> * INCLUDE_AND_SEEK_NEXT_COL INCLUDE_AND_NEXT_COL INCLUDE_AND_SEEK_NEXT_COL<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> * INCLUDE_AND_SEEK_NEXT_COL INCLUDE_AND_SEEK_NEXT_ROW INCLUDE_AND_SEEK_NEXT_ROW<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> * INCLUDE_AND_SEEK_NEXT_ROW SKIP SEEK_NEXT_ROW<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> * INCLUDE_AND_SEEK_NEXT_ROW NEXT_COL SEEK_NEXT_ROW<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> * INCLUDE_AND_SEEK_NEXT_ROW NEXT_ROW SEEK_NEXT_ROW<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> * INCLUDE_AND_SEEK_NEXT_ROW SEEK_NEXT_USING_HINT SEEK_NEXT_USING_HINT<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> * INCLUDE_AND_SEEK_NEXT_ROW INCLUDE INCLUDE_AND_SEEK_NEXT_ROW<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> * INCLUDE_AND_SEEK_NEXT_ROW INCLUDE_AND_NEXT_COL INCLUDE_AND_SEEK_NEXT_ROW<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> * INCLUDE_AND_SEEK_NEXT_ROW INCLUDE_AND_SEEK_NEXT_ROW INCLUDE_AND_SEEK_NEXT_ROW<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> * </pre><a name="line.188"></a> |
| <span class="sourceLineNo">189</span> */<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> private final MatchCode mergeFilterResponse(Cell cell, MatchCode matchCode,<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> ReturnCode filterResponse) {<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> switch (filterResponse) {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> case SKIP:<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> if (matchCode == MatchCode.INCLUDE) {<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> return MatchCode.SKIP;<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> } else if (matchCode == MatchCode.INCLUDE_AND_SEEK_NEXT_COL) {<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> return MatchCode.SEEK_NEXT_COL;<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> } else if (matchCode == MatchCode.INCLUDE_AND_SEEK_NEXT_ROW) {<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> return MatchCode.SEEK_NEXT_ROW;<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> }<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> break;<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> case NEXT_COL:<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> if (matchCode == MatchCode.INCLUDE || matchCode == MatchCode.INCLUDE_AND_SEEK_NEXT_COL) {<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> return columns.getNextRowOrNextColumn(cell);<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> } else if (matchCode == MatchCode.INCLUDE_AND_SEEK_NEXT_ROW) {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> return MatchCode.SEEK_NEXT_ROW;<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> }<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> break;<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> case NEXT_ROW:<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> return MatchCode.SEEK_NEXT_ROW;<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> case SEEK_NEXT_USING_HINT:<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> return MatchCode.SEEK_NEXT_USING_HINT;<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> case INCLUDE:<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> break;<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> case INCLUDE_AND_NEXT_COL:<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> if (matchCode == MatchCode.INCLUDE) {<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> matchCode = MatchCode.INCLUDE_AND_SEEK_NEXT_COL;<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> }<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> break;<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> case INCLUDE_AND_SEEK_NEXT_ROW:<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> matchCode = MatchCode.INCLUDE_AND_SEEK_NEXT_ROW;<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> break;<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> default:<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> throw new RuntimeException("UNEXPECTED");<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> }<a name="line.225"></a> |
| <span class="sourceLineNo">226</span><a name="line.226"></a> |
| <span class="sourceLineNo">227</span> // It means it is INCLUDE, INCLUDE_AND_SEEK_NEXT_COL or INCLUDE_AND_SEEK_NEXT_ROW.<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> assert matchCode == MatchCode.INCLUDE || matchCode == MatchCode.INCLUDE_AND_SEEK_NEXT_COL<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> || matchCode == MatchCode.INCLUDE_AND_SEEK_NEXT_ROW;<a name="line.229"></a> |
| <span class="sourceLineNo">230</span><a name="line.230"></a> |
| <span class="sourceLineNo">231</span> // We need to make sure that the number of cells returned will not exceed max version in scan<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> // when the match code is INCLUDE* case.<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> if (curColCell == null || !CellUtil.matchingRowColumn(cell, curColCell)) {<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> count = 0;<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> curColCell = cell;<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> }<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> count += 1;<a name="line.237"></a> |
| <span class="sourceLineNo">238</span><a name="line.238"></a> |
| <span class="sourceLineNo">239</span> if (count > versionsAfterFilter) {<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> // when the number of cells exceed max version in scan, we should return SEEK_NEXT_COL match<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> // code, but if current code is INCLUDE_AND_SEEK_NEXT_ROW, we can optimize to choose the max<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> // step between SEEK_NEXT_COL and INCLUDE_AND_SEEK_NEXT_ROW, which is SEEK_NEXT_ROW.<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> if (matchCode == MatchCode.INCLUDE_AND_SEEK_NEXT_ROW) {<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> matchCode = MatchCode.SEEK_NEXT_ROW;<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> } else {<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> matchCode = MatchCode.SEEK_NEXT_COL;<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> }<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> if (matchCode == MatchCode.INCLUDE_AND_SEEK_NEXT_COL || matchCode == MatchCode.SEEK_NEXT_COL) {<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> // Update column tracker to next column, As we use the column hint from the tracker to seek<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> // to next cell (HBASE-19749)<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> columns.doneWithColumn(cell);<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> }<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> return matchCode;<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> }<a name="line.255"></a> |
| <span class="sourceLineNo">256</span><a name="line.256"></a> |
| <span class="sourceLineNo">257</span> protected abstract boolean isGet();<a name="line.257"></a> |
| <span class="sourceLineNo">258</span><a name="line.258"></a> |
| <span class="sourceLineNo">259</span> protected abstract boolean moreRowsMayExistsAfter(int cmpToStopRow);<a name="line.259"></a> |
| <span class="sourceLineNo">260</span><a name="line.260"></a> |
| <span class="sourceLineNo">261</span> @Override<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> public boolean moreRowsMayExistAfter(Cell cell) {<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> // If a 'get' Scan -- we are doing a Get (every Get is a single-row Scan in implementation) --<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> // then we are looking at one row only, the one specified in the Get coordinate..so we know<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> // for sure that there are no more rows on this Scan<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> if (isGet()) {<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> return false;<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> }<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> // If no stopRow, return that there may be more rows. The tests that follow depend on a<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> // non-empty, non-default stopRow so this little test below short-circuits out doing the<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> // following compares.<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> if (this.stopRow == null || this.stopRow.length == 0) {<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> return true;<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> }<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> return moreRowsMayExistsAfter(rowComparator.compareRows(cell, stopRow, 0, stopRow.length));<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> }<a name="line.276"></a> |
| <span class="sourceLineNo">277</span><a name="line.277"></a> |
| <span class="sourceLineNo">278</span> public static UserScanQueryMatcher create(Scan scan, ScanInfo scanInfo,<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> NavigableSet<byte[]> columns, long oldestUnexpiredTS, long now,<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> RegionCoprocessorHost regionCoprocessorHost) throws IOException {<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> boolean hasNullColumn =<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> !(columns != null && columns.size() != 0 && columns.first().length != 0);<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> Pair<DeleteTracker, ColumnTracker> trackers =<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> getTrackers(regionCoprocessorHost, columns, scanInfo, oldestUnexpiredTS, scan);<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> DeleteTracker deleteTracker = trackers.getFirst();<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> ColumnTracker columnTracker = trackers.getSecond();<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> if (scan.isRaw()) {<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> return RawScanQueryMatcher.create(scan, scanInfo, columnTracker, hasNullColumn,<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> oldestUnexpiredTS, now);<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> } else {<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> return NormalUserScanQueryMatcher.create(scan, scanInfo, columnTracker, deleteTracker,<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> hasNullColumn, oldestUnexpiredTS, now);<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> }<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> }<a name="line.294"></a> |
| <span class="sourceLineNo">295</span>}<a name="line.295"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
